docs: def com_google_fonts_check_wght_valid_range(ttFont):
    """The variable font 'wght' (Weight) axis coordinate
       must be within spec range of 1 to 1000 on all instances."""
  
    Failed = False
    for instance in ttFont['fvar'].instances:
      if 'wght' in instance.coordinates:
        value = instance.coordinates['wght']
        if value < 1 or value > 1000:
          Failed = True
          yield FAIL, (f"Found a bad wght coordinate with value '{value}'"
                        " outside of the valid range from 1 to 1000.") 
          break
  
    if not Failed:
      yield PASS, ("OK")